New York's oldest and possibly grandest keeper of books.

One of the most scenic falls in Massachusetts has a history of death and grim legend.

Peek through the gates at this oasis from the city, full of Old English charm.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Mysterious 500-year-old tapestries depict a unicorn hunt.

Elevated freight railway turned wildly successful urban park.

Kenyan restaurant is a carnivore's paradise, serving exotic meats at its ultimate 'Beast of a Feast.'

The colonial city's social history is reflected in its fanciful door knockers.

A memorial museum to the political prisoners who were held at Sighet Prison, once one of the most feared places in Romania.

A small town Romanian cemetery filled with darkly humorous gravestones.

A curious building honoring past and current members of a historic musical comedy troupe.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

This elaborate towering structure was once famed for its revolutionary height.

The first American department store, and home to the largest operating musical instrument in the world.

Yo, Adrian!

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

The embalmed remains of the communist leader lie within a custom crystal coffin.

An out-of-place slice of France, smack in the middle of Shanghai.

This smaller cousin of the Forbidden City has gone from ancestral sacrifice to tourist's whispers.

The field of tiny caves that mark this Chinese cliffside are each their own historic Buddhist temple.